Trimming device



F. H. GROVE.

TRIMMING DEVICE.

APPLICATION FILED MAR. 16, 19:0.

Patent-ed July 25, 1922.

2 SHEE'iS SHEEI I.

F. H; GROVE.

TRIMMI'NG DEVICE,

v I APPLICATION Fl-LED MAR. I6, I926. 1,424,012.-

Pavtented July 25, 1922.

2 SHEETS-SHEEI J:

Ev N

, siren eras FK H. GROVE, OF COLUMBIANA, 0H1), ASSIGNOR TO THE BANNER MACHINE COMPANY, OF GOLUMBIANA, OHIO, CORPORATION OF OHIO.

TRIMMING DEVICE.

annie,

Specification of Letters Patent. Patented July 25, E822,

Application filed Hatch 16, 1920. genial No. 866,269.

To allwhom it may concern:

Be it known that I, FRANK H. GROVE, a citizen of the United States, residing at Columbiana, in the county of Columblana and State of Ohio, have invented a new and useful Trimming Device, of which the following is a specification. I This invention relates to machines for forming the outer casin I tires and more particular y; to a trimm ng device which forms a part of this machine.

"The objects of the invention are the provision of a machine designed to build tire casings and provided with a simple and efficient trimming device arranged to co-opcrate with the rotary core upon which-the tire casings are built, to trim the rough edges and surplus fabric from'each casing :be fore it is removed from the core.

With these objects in view the invention consists in the novel construction and arrangement of parts, hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes.- in the form, proportions, size and minor details of construction may be made within the scope of the appended claims,

' without departing from the spirit or sacrificing any of the advantages of the invention. I

The invention thus set forthin' general terms is illustrated in the accompanying drawings forming part hereof, in which- Figure l is a perspective view of a tire building machine provided with the improved trimming device.

Fig. 2 is a side elevation upon an enlarged scale of the trimming device, showin the operation thereof.

Fig. 3 is a plan view of the device, parts being broken away for the purpose of iilustration.

Fig. L is a detail perspective view of one of the individual arms which carries a trimming knife, and

Fig. 5 is a detail perspective View of one of the trimming knives and the rod upon which it is adjustably mounted. v p

A practical embodiment of theinvention is disclosed in the accompanying drawings, forming a part of this specification in which similar numerals of reference indicate cor-- for pneumatic is designated by the numeral 1, the rotatable,

core 2 bcin mounted thereon and arranged to receive t e fabric strips from which the tirecasing is built in the usual manner. The present invention-relates more particularly to the trimming device which is mounted upon the frame 1 and arranged to be brought into position relative to the core 2 to trim the surplus fabric from the .tire casing which has been built upon the core 2. This trimmin device comprises the bracket 3 which 18 attached to the frame 1 and to which is hingedly connected the arm 4 arranged to be swung intoposition above the rotating core, independent arms 5 being pivotally mounted upon said swinging arm and provided with suitable trim ming knives arranged to be brought into engagement with each side of the tire casing to trim the surplus fabric therefrom.

A handle 6 is provided upon the arm 4 for swinging the same into the operative or inoperative positions. The arm 4 is arranged to normally remain in the inoperative position shown in Fi 1 and a set screw 7 is provided in the bra ket 3 for the pure pose of limiting the downward movement of the arm when'it is swing into the operative position. The set screw may be adjusted to regulate the movement of the arm. 4 to accommodate cores of difi'erent diameters.

The individual arms 5 are pivoted near the outer or free end of the swinging arm 4 at spaced points 8. Each of these arms is provided with the off-set angular portion 9 provided with a bore 10 within which is slidably mounted a spring pressed pin 11 having a knurled head 12.

The bore 10 is provided with a shoulder 13 and between said shoulder and the en -larged portion 14 of the pin a coil spring 160 tion as indicated in dotted in s in Figs. 2 105 and 3. i

the operator grasping ilaeh of the arms 5 is provided with a longitudinai bore li a rod 18 being mounted within said bore and held in any desired adiustment by means of a set ":rew 15).. bloek 20 is earried upon the lower end oi eaeb rod 18 and provided with a transverse slot it through whieh is mounted a trunming knil'e 22. a set serew 2. in the bloek holding the trimming kuii'e in any desired ailiiistiiieiit. llandles it are. provided upon the individual arms 7 by means of whu-h the trimming knives may be operated tor triniming the surplus l abriifrom the tire easing as shown in Fig.

During the operation ot' upon the rotary our 2 will be loeated in the inoperative position shown in Fig. i and the individual arms 3 will be located in the inoperative position as shown in said figure, the pins 11 engagthe sockets 16 in the swinging arm 4-.

When the tire rasing has beeneompleted anu. it is desired to trim the rough edg s of surplus tabrie from the easing the swing ing arm iis moved into the operative position shown in Fig. 2. by means of the handle 6. and the individual arms I are in-ought into the position shown in Fig. 2.

' the knurled heads 12 of the pins 11 and pulling said pins out. ol engagement; with the sockets to a l'ter whieb the operating handles 24 ot the individual arms are grasped by the operator and the. arms moved toward the eore bringing the trin'iming knives 22 into engagement with the surplus tabrie at the points where it is desired to remove said surplus tabrir from the easing and as the core 2 rotate th to! pins will be trimmed evenly from the easing.

building the tire the swinging arm l i'tlthough the drawings and above spei-ilination diselose the best; mode in \Vlllt'll l have rontemplated embodying my invention i desire to be not limited to the details ol' sueh disclosure. For in the further prartiral application of my invention. many ebanges in form and eonstruetion may be made. as eireamstanees require or-expe ir-nre si'iggests without departing from the spirit, of the invention, within. the seope ol' the appended claims.

l. claim 1 l. in eoi'nhination with arotatable tire building eore af trimming deviee ineluding a swinging arm pivoted adjaeent said core .and arranged to be swung into position above the eore, means for autoi'natieally stopping the arm in the desired position. individual arms pivotally mounted upon said swinging arm and arran ed to be i 'ated upon opposite sides of t ie eore when the swinging arm is moved into operative position and trimming knives rarried by said individual arms and arranged to be mov d toward the i-ore. by the swinging movement of the individual. arms.

2. In combination with a rotatable tire building eore a trimming deviee ineluding a swinging arm pivoted adjaeent said core and arranged to he swung into position above the (ore, individual arms mounted upon said swinging arm and arranged to be located upon opposite sides oi the core when the, swinging arm is moved into operative position, trimming knives earrieii by said individual arms and arranged to be moved toward the eore and means for automatirally limiting the downward movement oi the swinging arm.

23. In (combination with a rotatable tire building rore a trimming devii-e ineluding a swinging arm pivoted adjaeentsaid eore and arranged to be swung into position above the (-ore. means for automatieally stopping the arm in the, desired position, individual arms pivotally mounted upon said swinging arm and arranged to be loeated upon opposite sides of the core when the swinging arm is moved into operative position. trimming knives earried by said individual arms and arranged to be moved toward the eore by the swinging movenarnt ol' the individual arms. and means for normally holding the individual arms in inoperative position.

ln eou'ibinatiou with a rotatable tire building eore a. trimming devi e inrluding a swinging arm pivoted adjacentsaid core and arranged to be swung into posit-ion above the wire, individual arms pivotally mounted upon said swinging arm and ar- 100 ranged to be lorated upon opposite sides of the eore. when the swinging arm is moved into operative position. trimming knives rarried by said individual arms andarranged to be moved toward the eore. spring 105 pressed pins (url'ied by said individual arms and sorkets provided in said swinging arm arranged to reeeive said pins to hold the individual arms in the inoperative position.

ln (-oinbination with. a, rotatable tire 110 building eore, a triuuning deviee inrluding a swinging arm pivoted adjaeent to said i-ore and arranged to be swung into position abov the eore, means for automatieally stopp ng the arm in the desired position, indi- 115 vidual arms pivotally mounted upon said swinging arm and arranged to be loeated upon opposite sides oithe eore when the swinging arm is moved into operative, position and adapted to be swung toward or 120 from the eore. trimming knives earried at the lower ends of tbe individual arms and means for automatically holding the individual arms in the inoperative position.

(3. in eomhination with a rotatable tire 12E buildingeore. a, trimming device ineluding a swinging arm pivoted adjacent to said (gore and arranged to be sunny: into position above the eore m ans for automatieallv stopping the arm in the d ired position. 131

individual arms pivotally mounted upon said swinging arm and arranged to be located upon opposite sides of the core when the swingin arm is moved into operative position and adapted to beswung toward or from the wre, trimming knives curried at 1 the lower ends of the individual arms and handles upon the individual arms for swinging the same upon their pivots to move the knives into engagement with the core.

In testimony that I claim the above, I have hereunto subscribed my name.

FRANK H. GROVE. 

